The county seat was placed at Bloomingburg and court was held in the home of John Devault.

The county seat was moved to Washington Court House in 1812 and a wooden structure was built that year.

This was soon deemed too small and a new courthouse was designed by architect David W. Gibbs and began construction in 1882.

The building contains central projections with smooth stone blocks on all faces with a flight of stairs accessing the entrances.

The bell tower is topped by a four faced clock which supports a dome rising to a statue.